运行if语句时,PowerShell 会将<test1>条件表达式计算为 true 或 false。 如果<test1>为 true,<statement list 1>则运行,PowerShell 退出 语句if。 如果<test1>为 false,则 PowerShell 将计算条件语句指定的<test2>条件。 有关布尔计算的详细信息,请参阅about_Booleans。
The if statement Here is a basic example of the if statement: PowerShell Copy $condition = $true if ( $condition ) { Write-Output "The condition was true" } The first thing the if statement does is evaluate the expression in parentheses. If it evaluates to $true, then it executes ...
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filter <name> {<statement list>} finally 定义一个语句列表,该列表在与try和catch关联的语句之后运行。finally即使按Ctrl+C离开脚本或在exit脚本中使用关键字 (keyword) ,语句列表也会运行。 语法: Syntax try {<statement list>} catch [<error type>] {<statement list>} finally {<stat...
似乎所有的条件语句都使用if...else...，它的作用可以简单地概括为非此即彼，满足条件A则执行A的语句，否则执行B语句，python的if...else...功能更加强大，在if和else之间添加数个elif,有更多的条件选择，其表达式如下:
Hey guys, In the (Check to see if the SAPgui version is already up to date) part of my powershell script it pulls the version correctly as I want it to with a table that states ProductVersion 740, patch 91, changelist 0…
(it has 5 digits so the color is red, the part number starts with the letterdmeaning it was manufacturer in Des Moines, etc.). At other times – like this one – we’d really prefer that PowerShell find the first true condition and then exit the switch statement. But how do we do...
turned off) by using the startup commandpowershell -nologo. By default, when you start Windows PowerShell via the command shell, Windows PowerShell runs and then exits. If you want Windows PowerShell to execute a command and not terminate, typepowershell /noexitfollowed by the command text...
A common idiom (in the Bash world, which inspired PowerShell's && and || operators) is to conditionally exit a script when invocation of a command fails, along the lines of: # Assume existence of /somepath and exit, if it doesn't exist. ...
You use the exit statement in the PowerShell script to exit the script with a custom error code. You run the echo %errorlevel% command at the command prompt to retrieve the error code. In this situation, an incorrect ...